Tasty Links allows you to set links for special keywords that you define. Every time a keyword is used on your blog, it will be automatically linked to the link you set.
These links are generated on-the-fly when the page loads, so they don't actually exist in the post content. This means that the links can be changed at any time and those changes will propagate across your entire blog.
Learn how to add a new Tasty Link here: https://support.wptasty.com/en/articles/1787934-how-do-i-add-a-new-tasty-link